18956420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{135403}}^1$

素因数の和:135419

約数の個数: 24

約数和(自身を含む): 45495744

約数和(自身を除く): 26539324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 135403, 270806, 541612, 677015, 947821, 1354030, 1895642, 2708060, 3791284, 4739105, 9478210, 18956420]

約数ペア:

[(1, 18956420), (2, 9478210), (4, 4739105), (5, 3791284), (7, 2708060), (10, 1895642), (14, 1354030), (20, 947821), (28, 677015), (35, 541612), (70, 270806), (140, 135403)]